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From: Russell King <rmk+kernel@arm.linux.org.uk>
To: alsa-devel@alsa-project.org,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-omap@vger.kernel.org,
	linux-sh@vger.kernel.org
Subject: [PATCH 06/14] clkdev: add clkdev_create() helper
Date: Fri, 03 Apr 2015 18:12:53 +0100
Message-ID: <E1Ye59J-0001BF-CZ@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20150403171149.GC13898@n2100.arm.linux.org.uk>

Add a helper to allocate and add a clk_lookup structure.  This can not
only be used in several places in clkdev.c to simplify the code, but
more importantly, can be used by callers of the clkdev code to simplify
their clkdev creation and registration.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 drivers/clk/clkdev.c   | 53 ++++++++++++++++++++++++++++++++++++++------------
 include/linux/clkdev.h |  3 +++
 2 files changed, 44 insertions(+), 12 deletions(-)

diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c
index 8e676eafc823..6d992d8b7c47 100644
--- a/drivers/clk/clkdev.c
+++ b/drivers/clk/clkdev.c
@@ -302,6 +302,19 @@ vclkdev_alloc(struct clk_hw *hw, const char *con_id, const char *dev_fmt,
 	return &cla->cl;
 }
 
+static struct clk_lookup *
+vclkdev_create(struct clk_hw *hw, const char *con_id, const char *dev_fmt,
+	va_list ap)
+{
+	struct clk_lookup *cl;
+
+	cl = vclkdev_alloc(hw, con_id, dev_fmt, ap);
+	if (cl)
+		__clkdev_add(cl);
+
+	return cl;
+}
+
 struct clk_lookup * __init_refok
 clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
 {
@@ -316,6 +329,29 @@ clkdev_alloc(struct clk *clk, const char *con_id, const char *dev_fmt, ...)
 }
 EXPORT_SYMBOL(clkdev_alloc);
 
+/**
+ * clkdev_create - allocate and add a clkdev lookup structure
+ * @clk: struct clk to associate with all clk_lookups
+ * @con_id: connection ID string on device
+ * @dev_fmt: format string describing device name
+ *
+ * Returns a clk_lookup structure, which can be later unregistered and
+ * freed.
+ */
+struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
+	const char *dev_fmt, ...)
+{
+	struct clk_lookup *cl;
+	va_list ap;
+
+	va_start(ap, dev_fmt);
+	cl = vclkdev_create(__clk_get_hw(clk), con_id, dev_fmt, ap);
+	va_end(ap);
+
+	return cl;
+}
+EXPORT_SYMBOL_GPL(clkdev_create);
+
 int clk_add_alias(const char *alias, const char *alias_dev_name,
 	const char *con_id, struct device *dev)
 {
@@ -325,12 +361,10 @@ int clk_add_alias(const char *alias, const char *alias_dev_name,
 	if (IS_ERR(r))
 		return PTR_ERR(r);
 
-	l = clkdev_alloc(r, alias, alias_dev_name);
+	l = clkdev_create(r, alias, "%s", alias_dev_name);
 	clk_put(r);
-	if (!l)
-		return -ENODEV;
-	clkdev_add(l);
-	return 0;
+
+	return l ? 0 : -ENODEV;
 }
 EXPORT_SYMBOL(clk_add_alias);
 
@@ -370,15 +404,10 @@ int clk_register_clkdev(struct clk *clk, const char *con_id,
 		return PTR_ERR(clk);
 
 	va_start(ap, dev_fmt);
-	cl = vclkdev_alloc(__clk_get_hw(clk), con_id, dev_fmt, ap);
+	cl = vclkdev_create(__clk_get_hw(clk), con_id, dev_fmt, ap);
 	va_end(ap);
 
-	if (!cl)
-		return -ENOMEM;
-
-	clkdev_add(cl);
-
-	return 0;
+	return cl ? 0 : -ENOMEM;
 }
 EXPORT_SYMBOL(clk_register_clkdev);
 
diff --git a/include/linux/clkdev.h b/include/linux/clkdev.h
index cd93b215e3af..a240b18e86fa 100644
--- a/include/linux/clkdev.h
+++ b/include/linux/clkdev.h
@@ -38,6 +38,9 @@ struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
 void clkdev_add(struct clk_lookup *cl);
 void clkdev_drop(struct clk_lookup *cl);
 
+struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
+	const char *dev_fmt, ...);
+
 void clkdev_add_table(struct clk_lookup *, size_t);
 int clk_add_alias(const char *, const char *, const char *, struct device *);
 
-- 
1.8.3.1


  parent reply index

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-03 17:11 [PATCH 00/14] Fix fallout from per-user struct clk patches Russell King - ARM Linux
2015-04-03 17:12 ` [PATCH 01/14] clk: update clk API documentation to clarify clk_round_rate() Russell King
2015-04-03 17:12 ` [PATCH 02/14] clkdev: drop __init from clkdev_add_table() Russell King
2015-04-03 17:12 ` [PATCH 03/14] clkdev: get rid of redundant clk_add_alias() prototype in linux/clk.h Russell King
2015-04-03 23:49   ` Tony Lindgren
2015-04-04 12:43   ` Robert Jarzmik
2015-04-04 12:53     ` Russell King - ARM Linux
2015-04-06 19:04     ` Stephen Boyd
2015-04-07 10:05       ` Robert Jarzmik
2015-04-07 12:42       ` Russell King - ARM Linux
2015-04-06  5:50   ` Sekhar Nori
2015-04-03 17:12 ` [PATCH 04/14] clkdev: const-ify connection id to clk_add_alias() Russell King
2015-04-03 17:12 ` [PATCH 05/14] clkdev: use clk_hw internally Russell King
2015-04-06 20:18   ` Stephen Boyd
2015-04-03 17:12 ` Russell King [this message]
2015-04-06 20:19   ` [PATCH 06/14] clkdev: add clkdev_create() helper Stephen Boyd
2015-04-07 12:43     ` Russell King - ARM Linux
2015-04-07 23:09       ` Stephen Boyd
2015-04-03 17:12 ` [PATCH 07/14] media: omap3isp: remove unused clkdev Russell King
2015-04-03 21:44   ` Laurent Pinchart
2015-04-05 14:20     ` Russell King - ARM Linux
2015-04-07  9:42       ` Laurent Pinchart
2015-04-07 12:45         ` Russell King - ARM Linux
2015-04-07 14:38           ` Laurent Pinchart
2015-04-03 17:13 ` [PATCH 08/14] SH: use clkdev_add_table() Russell King
2015-04-03 17:13 ` [PATCH 09/14] ARM: lpc32xx: convert to " Russell King
2015-04-03 17:13 ` [PATCH 10/14] ARM: orion: use clkdev_create() Russell King
2015-04-04  0:17   ` Andrew Lunn
2015-04-07 13:20     ` Gregory CLEMENT
2015-04-07 14:01       ` Russell King - ARM Linux
2015-04-07 14:20         ` Gregory CLEMENT
2015-04-03 17:13 ` [PATCH 11/14] ARM: omap2: " Russell King
2015-04-03 23:49   ` Tony Lindgren
2015-04-03 17:13 ` [PATCH 12/14] ARM: omap2: use clkdev_add_alias() Russell King
2015-04-03 23:50   ` Tony Lindgren
2015-04-03 17:13 ` [PATCH 13/14] ASoC: migor: use clkdev_create() Russell King
2015-04-03 17:13 ` [PATCH 14/14] clk: s2mps11: " Russell King
2015-04-03 17:16 ` [PATCH 00/14] Fix fallout from per-user struct clk patches Russell King - ARM Linux
2015-04-05  9:04 ` Geert Uytterhoeven
2015-04-05 14:13   ` Russell King - ARM Linux

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